EP1205674A2 - Cheville à expansion - Google Patents

Cheville à expansion Download PDF

Info

Publication number
EP1205674A2
EP1205674A2 EP01124549A EP01124549A EP1205674A2 EP 1205674 A2 EP1205674 A2 EP 1205674A2 EP 01124549 A EP01124549 A EP 01124549A EP 01124549 A EP01124549 A EP 01124549A EP 1205674 A2 EP1205674 A2 EP 1205674A2
Authority
EP
European Patent Office
Prior art keywords
expansion
screw
dowel
dowel sleeve
screw thread
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01124549A
Other languages
German (de)
English (en)
Other versions
EP1205674B1 (fr
EP1205674A3 (fr
Inventor
Aaron Daly
Thomas Danz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fischerwerke Artur Fischer GmbH and Co KG
Original Assignee
Fischerwerke Artur Fischer GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fischerwerke Artur Fischer GmbH and Co KG filed Critical Fischerwerke Artur Fischer GmbH and Co KG
Publication of EP1205674A2 publication Critical patent/EP1205674A2/fr
Publication of EP1205674A3 publication Critical patent/EP1205674A3/fr
Application granted granted Critical
Publication of EP1205674B1 publication Critical patent/EP1205674B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/12—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like
    • F16B13/124—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like fastened by inserting a threaded element, e.g. screw or bolt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts

Definitions

  • the invention relates to an expansion anchor with the features of the preamble of the claim 1.
  • expansion anchors are known per se. They have an anchor sleeve that passes through Screwing in a spreading screw can be expanded and thereby anchored in a borehole are.
  • the expansion screw has a first screw thread, which in the Dowel sleeve of screwed expansion screw is in engagement with the dowel sleeve.
  • the dowel sleeve can have longitudinal slots that divide it into spreading tongues, so that the expansion screw with lower torque into the dowel sleeve can be screwed in and the dowel sleeve can be expanded more easily. Consists of the dowel sleeve an elastic material, for example made of plastic, can also be used without it Slots are formed.
  • the invention is based on the object, the anchoring force of such To increase expansion dowels.
  • the anchoring force is that for pulling out the in one Borehole anchored expansion anchor necessary force.
  • the Expansion screw of the expansion anchor according to the invention has a second screw thread on that with an axial distance from the first screw thread on the expansion screw is arranged.
  • the second screw thread also engages with the dowel sleeve.
  • the dowel sleeve a first expansion and / or predetermined separation point between the engagement areas of the two screw threads with the expansion screw screwed into the dowel sleeve on.
  • the length of the second screw thread of its expansion screw and its axial Distance from the first screw thread will increase the anchoring force of the Expansion dowels reached in a borehole.
  • the extension of the expansion anchor by second screw thread brings especially in building materials of low strength like Gas and aerated concrete advantages, as an expansion pressure exerted by the expansion anchor on a greater length is distributed.
  • a hollow building material such as a perforated brick
  • the expansion anchor according to the invention has the advantage that due to the two Screw thread of his expansion screw with a high probability a spread Area of the dowel sleeve is at least in a web of the perforated brick, see above that the expansion anchor is anchored.
  • a conventional expansion anchor with only one Screw threads can cause a spread area of the Expansion dowel is essentially only in a cavity of the hollow building material and the Expansion anchor is therefore poorly anchored.
  • Expansion dowel is that in a building material with different areas Strength with high probability at least a spread section of the Expansion dowel is located in a zone of high strength of the building material and thereby one good anchoring effect.
  • the first expansion and / or set point separates the inventive one Expansion dowels in two completely or at least partially from each other independent expansion areas divided, which anchor the expansion anchor in a borehole.
  • this reduction affects the anchoring force in an area on one side of the first expansion and / or The separation point is the anchoring force on the other side of the first expansion and / or No separation point or at least less than a no expansion and / or separation point having dowel sleeve.
  • the dowel sleeve of the expansion anchor on one Embodiment of the invention on a laterally projecting collar.
  • This covenant can annular disc-shaped and arranged in a radial plane or, for example also funnel-shaped for receiving a countersunk head of the expansion screw his.
  • the collar overlaps an object to be fastened.
  • the second expansion and / or predetermined separation point an axial distance from the engagement area of the second screw thread in the dowel sleeve with the expansion screw screwed into the dowel sleeve.
  • a rear flank of the screw is second screw thread comparatively flat to the longitudinal direction of the expansion screw aligned, it runs at an angle of approximately 45 ° or less to the longitudinal direction the expansion screw.
  • the second screw thread has a sawtooth shape, for example Thread profile, being a longer and at a shallower angle to Thread flank running in the longitudinal direction of the expansion screw in the screwing direction is arranged behind.
  • the rear flank of the second in the screwing direction Screw thread forms an oblique or spreading surface, which occurs during an axial movement the expansion screw in the dowel sleeve further spreads the dowel sleeve.
  • the in the screwing direction rear flank of the second screw thread acts in this embodiment like a cone-shaped expansion body, the one forming the expansion surface rear flank of the second screw thread helically around the expansion screw applies.
  • This embodiment of the invention has the following advantage: widens Borehole in which the expansion anchor according to the invention is anchored, for example in As a result of the formation of cracks, a pull on the expansion screw causes a relative movement the expansion screw in the dowel sleeve. This relative movement of the expansion screw in the dowel sleeve causes about the comparatively flat to the longitudinal direction of the expansion screw aligned rear flank of the second expansion screw thread another Spread the dowel sleeve, i.e. spread the dowel.
  • the expansion anchor according to the invention also exhibits post-expansion behavior when the borehole is widened a high anchoring force.
  • the spreading behavior is determined by the one arranged between the collar of the dowel sleeve and the second screw thread second expansion and / or separation point favors because the second expansion and / or Set separation point on the dowel sleeve from an object fastened with the expansion dowel applied axial force at least reduced. This prevents a such axial force in a borehole expansion together with the Pulls the expansion screw out of the drill hole.
  • the second expansion and / or separation point favors the relative movement of the expansion screw in the dowel sleeve, which increases the expansion behavior causes.
  • the dowel sleeve has V-shaped slots for the Engagement of the first screw thread of the expansion screw in the area of its front End up.
  • One leg of the V-shaped slots serves to engage the Screw thread, due to its oblique course, this leg is the V-shaped Slits approximately adapted to a pitch of the screw thread.
  • the other Leg of the V-shaped slots allows axial expansion or compression the dowel sleeve and thus allows adaptation to threads with different Pitch.
  • the expansion dowel 10 has a dowel sleeve 12 made of plastic and an expansion screw 14 shown only in Figure 2.
  • the dowel sleeve 12 is essentially tubular, it has a rear end a funnel-shaped, laterally projecting collar 16 for receiving a countersunk head 18 the expansion screw 14.
  • the dowel sleeve 12 has two expansion and / or predetermined separation points 20, 22, which are designed as constrictions in the form of rounded, circumferential grooves are. With axial pull on the. Dowel sleeve 12 expands on its expansion and / or predetermined separation point 20, 22 and separates into two when a tearing force is exceeded or three parts.
  • a first expansion and / or predetermined separation point 20 is from a longitudinal center of the Dowel sleeve 12 is arranged slightly offset in the direction of a front end of the dowel sleeve 12.
  • a second expansion and / or predetermined separation point 22 is at an axial distance from The collar 16 is thus arranged in the rear area of the dowel sleeve 12.
  • the longitudinal slots 24 Two extend opposite one another from the front expansion and / or predetermined separation point 20 arranged longitudinal slots 24 a bit towards the front End 19 of the dowel sleeve 12.
  • the longitudinal slots 24 have one in their longitudinal center circular extension 26 on.
  • the longitudinal slots 24 facilitate insertion of the Expansion screw 14 and a widening and spreading of the dowel sleeve 12 in the axial Area of the dowel sleeve 12 in which the longitudinal slots 24 are arranged.
  • the dowel sleeve 12 has V-shaped slots 28, of which several are arranged one behind the other in the longitudinal direction of the dowel sleeve 12. Except the The V-shaped slots 28 visible in FIG. 1 have the dowel sleeve 12 opposite arranged V-shaped slots.
  • the V-shaped slots 28 are with their tip directed to the front, their legs 30, 32 run obliquely to the rear.
  • the expansion screw 14 consists of metal, in particular steel. It shows a first Screw thread 34 and a second screw thread at an axial distance behind it 36 on. Between the two screw threads 34, 36 and from the second screw thread 36 to the screw head 18, the expansion screw 14 has threadless shaft sections 38, 40 on. While the first screw thread 34 as a conventional Wood screw, triangular or pointed thread is formed the second Screw thread 36 has a sawtooth-shaped thread profile. A longer and in an acute angle, that is to say flat to a longitudinal direction of the expansion screw 14 Flank 42 is in the screwing direction of the expansion screw 14 on a rear Page arranged.
  • the function of the expansion anchor 10 according to the invention is described below with reference to FIG. 2 explained in more detail:
  • the dowel sleeve 12 is put through by the to be fastened Component 44 inserted into the drill hole in the masonry 46 and the expansion screw 14 is screwed into the dowel sleeve 12.
  • the two screw threads 34, 36 are self-tapping, the dowel sleeve 12 therefore does not need a thread to be provided.
  • the expansion screw 14 expands and spreads the dowel sleeve 12 and thereby anchors the expansion plug 10 in the drill hole in the masonry 46.
  • the screw head 18 and the collar 16 of the dowel sleeve 12 overlap the one to be fastened Component 44 on the side facing away from the masonry 46 and thereby hold the component 44 on the masonry 46.
  • the first expansion and / or predetermined separation point 20 in the area of a front end of the second screw thread 36 second expansion and / or setpoint separation point 22 is located between a rear end of the second screw thread 36 and the screw head 18.
  • the first screw thread 34 is in an axially fixed engagement with the dowel sleeve 12 by positive locking first screw thread 34 also engages in one leg 30 of the V-shaped Slots 28 at the front end of the dowel sleeve 12.
  • the other leg 32 enables an axial expansion or compression of the dowel sleeve 12 and thereby enables an adaptation to a distance between the threads of the first screw thread 34th
  • the expansion screw 14 axially, for example, from the component 44 to be fastened acted upon, it moves axially in the dowel sleeve 12 to the rear.
  • the rear, in Flank 42 aligned at an acute angle to the longitudinal direction of expansion screw 14 of the second screw thread 36 acts on the axial displacement of the expansion screw 14 in the dowel sleeve 12 in the manner of an expansion cone, the rear flank 42 spreads the Dowel sleeve on.
  • the expansion dowel 10 according to the invention thus has a post-expansion behavior so that it has a high anchoring force even when expanding the borehole having.
  • the second expansion and / or set point 42 favors the necessary for the re-spreading Relative movement of the expansion screw 14 in the dowel sleeve 12, since it is a Axial movement of the rear part of the dowel sleeve 12 relative to the front part of the Allows dowel sleeve 12.
  • the first expansion and / or set separation point 20 an axial movement of the part of the dowel sleeve 12 in front of it relative to the part behind it. Due to the first expansion and / or setpoint separation point 20 the expansion plug 10 according to the invention is arranged similarly to two in a row and in particular expansion anchors connected to one another by the expansion screw 14 look at.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dowels (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Piles And Underground Anchors (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Materials For Medical Uses (AREA)
EP01124549A 2000-11-10 2001-10-13 Cheville à expansion Expired - Lifetime EP1205674B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10055866 2000-11-10
DE10055866A DE10055866A1 (de) 2000-11-10 2000-11-10 Spreizdübel

Publications (3)

Publication Number Publication Date
EP1205674A2 true EP1205674A2 (fr) 2002-05-15
EP1205674A3 EP1205674A3 (fr) 2002-11-06
EP1205674B1 EP1205674B1 (fr) 2004-12-08

Family

ID=7662899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01124549A Expired - Lifetime EP1205674B1 (fr) 2000-11-10 2001-10-13 Cheville à expansion

Country Status (6)

Country Link
EP (1) EP1205674B1 (fr)
AT (1) ATE284491T1 (fr)
CZ (1) CZ20014041A3 (fr)
DE (2) DE10055866A1 (fr)
HU (1) HUP0104829A3 (fr)
PL (1) PL350590A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2037129A1 (fr) * 2007-09-14 2009-03-18 Allfa Dübel GmbH Cheville de tige longue
EP2302226A1 (fr) * 2009-09-29 2011-03-30 fischerwerke GmbH & Co. KG Cheville double et procédé de montage d'espacement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005018485A1 (de) * 2005-04-21 2006-10-26 Fischerwerke Artur Fischer Gmbh & Co. Kg Dübel zur Verankerung in Vollbaustoffen
DE102020102294A1 (de) 2020-01-30 2021-08-05 Dehn Se + Co Kg Montagesystem

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2607338C2 (de) * 1976-02-23 1986-01-09 Hilti Ag, Schaan Schlagdübel mit Spreizhülse und Spreizelement
DE2947752A1 (de) * 1979-11-27 1981-07-23 M.Meisinger KG, 8890 Aichach Kunststoffduebel
GB2091368B (en) * 1981-01-21 1984-09-19 Tucker Fasteners Ltd Drive anchor
DE3317798A1 (de) * 1983-05-17 1984-11-22 Bernd 4352 Herten Gräwe Befestigungselement fuer bauteile an mit loechern versehenen baukoerpern o. dgl.
DE3429585A1 (de) * 1984-08-10 1986-02-20 Alfons 5758 Fröndenberg Knoche Aus einem kunststoffspreizduebel und einer befestigungsschraube bestehender befestigungssatz
DE9310356U1 (de) * 1993-07-12 1993-09-23 Mea Meisinger Stahl und Kunststoff GmbH, 86551 Aichach Spreizduebel
DE19936927A1 (de) * 1999-02-06 2000-08-10 Fischer Artur Werke Gmbh Kunststoffdübel
DE19915474A1 (de) * 1999-04-06 2000-10-12 Fischer Artur Werke Gmbh Spreizdübel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2037129A1 (fr) * 2007-09-14 2009-03-18 Allfa Dübel GmbH Cheville de tige longue
EP2302226A1 (fr) * 2009-09-29 2011-03-30 fischerwerke GmbH & Co. KG Cheville double et procédé de montage d'espacement

Also Published As

Publication number Publication date
HUP0104829A3 (en) 2003-04-28
ATE284491T1 (de) 2004-12-15
CZ20014041A3 (cs) 2002-06-12
EP1205674B1 (fr) 2004-12-08
HU0104829D0 (en) 2002-01-28
DE10055866A1 (de) 2002-05-29
EP1205674A3 (fr) 2002-11-06
PL350590A1 (en) 2002-05-20
HUP0104829A2 (en) 2002-10-28
DE50104755D1 (de) 2005-01-13

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